Anti-skid device for tires



Aug' 9, 1955 P. CHAMPIGNY 2,714,9M

ANTI-SKID DEVICE FOR TIRES Filed Jan. 19, 1955 mili United States Patent ANTI-SKID DEVICE FOR TIRES Patrick Champigny, Laval-des-Rapides, Quebec, Canada, assignor to Real Clavette, Montreal, Quebec, Canada Application January 19, 1953, Serial No. 331,823

3 Claims. (Cl. 152-222) The present invention relates to an anti-skid device for tires and is an improvement over my co-pending patent application Serial No. 278,628.

In the above mentioned co-pending patent application, there is described an anti-skid device for tires consisting of a plurality of exible cables adapted to be maintained around the outer surfaces of the tire and a plurality of aligned rollers strung on each cable and freely rotatable thereon. It has been found that such an antiskid device outlasts conventional anti-skid chains several times.

In the anti-skid device, according to the above mentioned patent application, the cable used is a multistrand steel cable having a high tensional strength, while the rollers are made of mild steel tube in order to have great impact resistance. It has been found in practice that the friction exerted by the rollers on the individual strands of the cable result in the successive breaking of said strands and in the eventual breaking of the cable. Accordingly, the general object of the present invention is the provision of means to overcome the above mentioned disadvantage.

A more specic object of the present invention is the provision of protective sheathing for the cable on which the rollers are strung, in order to prevent wearing out of the individual strands of the cable.

Yet another important object of the present invention is the provision of a protective sheathing for the cables of the device of the character described which will be ilexible and will not rotate relatively to said cables while at the same time provide a smooth rolling surface for the rollers strung on the cables.

Yet another important object of the present invention is the provision in an anti-skid device of the character described, of a cable sheathing which will be efficient in use and relatively inexpensive to manufacture,

The foregoing and other important objects of the present invention will become more apparent during the following disclosure and by referring to the drawings in which:

Figure 1 is a plan view of a gripping element of an anti-skid device for tires according to the invention;

Figure 2 is a partial sectional view of the same;

2,714,914 Patented Aug. 9, 1955 Figure 3 is a partial sectional end View of the same; and

Figure 4 is a cross-section along line 4-4 of Figure 3.

Referring now more particularly to the drawings in which like reference characters indicate like elements throughout, the protective sheathing, according to the invention, consists in a helical at spring or helically wound strip 1 of substantially rectangular cross-section surrounding the whole length of the: multi-strand steel cable 2. Hook members 3 have a hollow outer end 4 adapted to receive the ends of the cable 2 and of the helical strip 1. The cable 2 is secured to the hook 3 by bosses 5 which are formed in the latter. The ends 6 of the helical strip 1 are secured to the cable 2 and to the hook 3 by means of the pressed portion 7 of said hook.

The hooks 3 are adapted to attach the cables 2 to chains or cables extending on each side of the tire.

A plurality of freely rotatable rollers are strung on the sheathing 1 and cable 2 in end abutting relationship and each end roller 8 abuts against the edge 9 of the hook member 3. The ends of each roller 8, 8' are slightly flared to provide ice or snow gripping edges 10.

The circumvolutions of the helical strip 1 are spaced from one another whereby said helical strip may readily flex along with the cable 2 but will at the same time prevent direct frictional engagement of the rollers 8 with the individual strands of the cable 2, whereby .the life of cable 2 will be prolonged considerably as compared to the life of an unprotected cable.

While a preferred embodiment according to the present invention has been illustrated and described, it is understood that various modifications may be resorted to without departing from the spirit and scope of the appended claims.

I claim:

1. An anti-skid device for tires comprising a exible multi-strand cable,means to connect the ends of said cable around the outer surfaces of the tire, a ilexible helical strip of flat section wound around and surrounding the whole length of said cable, the circumvolutions of said helical strip being spaced from one another, and a plurality of tubular rollers loosely strung in end abutting relationship on said cable and helical strip, said connecting means forming stop members to abut the end rollers at both ends of said cable, and forming also a sleeve enclosing and securing the ends of said helical strip.

2. An anti-skid device as claimed in claim 1 wherein said connecting means are in the form of hooks.

3. An anti-skid device as claimed in claim 2 wherein said rollers are flared outwardly at their ends.

References Cited in the tile of this patent UNITED STATES PATENTS 1,297,155 Harrington Mar. 11, 1919 2,514,243 landiorio July 4, 1950 2,589,207 Welsh Mar, 11, 1952 

